Internal pipe-cutter



(No Mod e1.)

G. W, MORLEY. INTERNAL PIPE CUTTER.

Patented Dec. 21, 1897.

'Witnassssfl UNITED STATES PATENT @FFIcE.

CHARLES WM. MORLEY, OF LAWTON, MICHIGAN.

INTERNAL PIPE-CUTTER.

SPECIFICATION forming part of Letters Patent 1T0. 595,885, dated December 21, 1897.

Application filed October 14, 1896. Serial No. 608.874. (No model.)

To aZZ whom it may concern:

Be it known that I, CHARLES WM. MOR- LEY, a citizen of the United States, residing at the village of Lawton, in the county of Van Buren andState of Michigan, have invented a certain new and useful Internal Pipe-Outter, of which the following is a specification.

My invention relates to improvements in internal pipe-cutters.

In the sinking of tubular wells the bottom of the pipe frequently becomes bent or injured by coming in contact with rocks or other obstructions and not infrequently the pipe of an old well becomes lodged in the soil, so that it cannot be removed." self is valuable if it could be removed without the expense of digging for it. When the lower end of apipe becomesinjured in sinking a well, it is frequently possible to cut off a few feet of the pipe, raise the whole portion of the pipe away from it, and drop in a dynamite cartridge, which will not only remove the portion of the injured pipe below,

' but will shatter the'obstruction beneath and enable the builder to sink the pipe along the same line and in the language of well-diggers not lose the hole.

The objects of this invention are, first, to provide an internal pipe-cutter which can be used at any distance from the end of the pipe and be operated safely, successfully, and powerfully; second, to provide an improved and simplified construction of pipe-cutters third, to provide improved means of feeding the cutting-blades and guiding the same in an internal pipe-cutter, and further objects appearing definitely in the detailed description. I accomplish these objects by the mechanism and means described in the following specification and illustrated in the accompanying drawings, in which- Figure 1 is a view of a section of pipe broken in sections, in which one of my internal pipe-cutters is in use a portion of the same being in section 1 on line 1 1 of Fig. 2. Fig. 2 is an enlarged detail sectional View on line 2 2 of Fig. 1. Fig. 3 is an enlarged detail sectional view on line 3 3 of Fig. 1. Fig. 4 is an enlarged detailed vertical sectional View on line 4: t of Fig. 2. Fig. 5 is an enlarged detail sectional view on line 5 5 of Fig. 1.

The pipe it- 1 In the drawings all of the sectional views are taken looking in the direction of the little arrows at the ends of the secti0n-lines.

Similar letters of reference refer to similar parts throughout the several views.

Referring to the lettered parts of the drawings, A represents the pipe that is to be out, which, for consistency in description, I will call a Well-pipe.

B is the main block or shell of the pipecutter, cylindrical in form, and is secured to the bottom end of the pipe 13, which extends inside of the well-pipe A. The block B is of the size to fit loosely the interior of the wellpipe A. On the bottom of the pipe B is a cutter plate or blade Dand a guide plate or blade D, which are supported in suitable guideways at the bottom of block B, which is preferably in separate plates Gr G, that being the most convenient way of making the same. That structure possesses considerable merit on account of its simplicity and ease of construction. Through the inner end of the plates B are mortised dovetail apertures a,

which serve as a retaining means for the plates D D. Down through the cylinder B are openings 6 e, which come-opposite the outer end of the blades D D and serve to deliver oil to the same, slight openings being extended out over the tops of the blades through to their ends. The Wedge-shaped piece 0 is secured to the bottom end of the rod 0, which projects up through a small pipe B and out of the top of the same. The 'top terminates in a small screw, on which is a hand-wheel F, which is threaded at-the center. The hand-wheel rests against the top of the pipe B. Toward the top end of the pipe B is fixed a collar B, that rests on the top of the pipe A. The collar is operated by a wrench E, which is preferably a ratchetwrench. V

The pipe B and the rod 0 are conveniently adjustable to any desired length by making the same jointed, so that the lengths can be removed or added thereto.

Having thus described and enumerated the parts of my improved pipe-cutter, I will now point out the method of its use.

When it becomes necessary to cut off a length of pipe, the block B, with the blades D D thereon, is inserted to the required level or distance and lengths of the pipe B and rods are added until the same project above or beyond the Well-pipe A. The collar B is then secured to the pipe B and the hand-Wheel F is turned onto the rod 0. Oil of course is placed in the openings 6 e at the beginning. The pipe and the block B below of course being connected both are revolved by means of a wrench E acting on the collar B. As the same is turned around the blade D is fed outwardly against the interior of the tube A by turning the hand-wheel, which draws up the rod 0 and consequently the block 0, which is attached thereto. This feeds the cutter-blade outwardly in one direction and the guide-plate D in the opposite direction,

, and as the whole is continued to be turned by the wrench cuts the pipe below from the interior. WVhen the pipe has been severed, the hand-Wheel F is turned in the opposite direction,the Wedge descends, and by its engagements with the inner ends of the plates 1 I) withdraws the same, so that the entire tool and apparatus can be lifted from the insideof the pipe.

Having thus described my new and improved internal pipe-cutter, I desire to state that it can be considerably varied in its details without departing from my intention, In the place of the hand-wheel F a nut and a wrench might be used. than the ratchet-wrench-niight be provided for rotating the collar B.

I also desire to say that different blocks B couldbe provided with difierent sets of knives to ,cut dilferent-sized pipes. Blades D, with different-shaped cutting edges, might be provided for various purposes, such as smooth,- ing portions of the interior of the pipe or reaming out joints where such may be re quired.

I also desire to state that my improved internal pipe-cutter is desirable for use in cutting pipe above ground and leaves it much Other attachments smoother cut on the pipe than the usual ex ternal cutter.

Having thus described my invention, What I claim as new, and desire to secure by Letters Patent, is-

1. In an internal pipe-cutter, the combination of the cylindrical block B, guide plate or blade D, and cutting plate or blade D, s pported by suitable guide-plates G, G, at the bottom of said cylinder B, the said cylinder containing oil-holes e, e, therethrough, extending out over the blades to the edge thereof; a suitable pipe B, attached to said block B, and extending to the end of the pipe; a collar B, on the end of the pipe B, to rest against the end of the pipe to be cut; a wedge-shaped block C, pointing upwardly into the bottom of the cylindrical block B, having dovetails. or ridges Ct, a,which engage incorrespondin slots on: the inner ends of the blades D, D a rodO, secured to wedgeshaped piece 0, and extending upwardly through the pipe B, and terminating in a screw at the top; and a hand-Wheel F, screw-threaded to fitagainst the topor outer end of the pipe B, all coacting together substantially a described for the purpose specified.

2. In an internal pipe-cutter, the combination of a cylindrical block B, adapted to fit within a pipe; having suitable guideways on its, lowerend to receive the cutter-blades and having oil-receptacles. formed within it with grooves leading'along the guidewaysfor the cutter-blades; cutter and guide blades within the guideways at the bottom of said block so positioned that the oilfrorn the receptacles inthe block can, pass out, upon the same to lubricate them for thepurpose specified.

In witness whereof I have hereunto set my hand and seal in the presence of two Witnesses.

CHARLES WM. MORLEY. [Ls] Vitnesses:

J UAN McKEYEs, F. H. MoKEyEs. 

